Why vibration doesn't work on Android P (API 28)?

Question

I'm trying to implement haptic feedback when changing a value of a seekbar. It works correctly on Android pre-P. On Android P it doesn't work at all. Code:

private val vibrator = context.getSystemService(Context.VIBRATOR_SERVICE) as Vibrator?
private val effect by lazy { VibrationEffect.createOneShot(VIBRATION_DURATION, 50)}
...

fun vibrate() {
    if (vibrator == null || !vibrator.hasVibrator()) {
        return
    }
    vibrator.cancel()
    vibrator.vibrate(effect)

score 6 · Answer 1 · answered Aug 30 '18 at 07:03

6

It turns out the user has to enable Touch vibration in Settings -> Accessibility -> Vibration -> Touch vibration:

Without it, short vibration (less than 5 seconds) won't work. For me, this is not quite intuitive, so I decided to post it here

answered Aug 30 '18 at 07:03

Mike

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This is a very unfortunate design! Is there any way to check that setting programmatically? – doctorram Nov 14 '22 at 16:37

score 2 · Answer 2 · answered Jun 26 '19 at 08:29

2

exactly what Mike said. but for android Pie - Setting->Sounds and vibration -> System sounds and vibration -> Touch vibration

answered Jun 26 '19 at 08:29

kfir

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score 1 · Answer 3 · answered Apr 13 '23 at 09:03

You can use vibrate(VibrationEffect vibe, VibrationAttributes attributes)

(Note: Before API level 33 you need to use AudioAttributes instead of Vibration Attributes)

By setting the Usage of the VibrationAttributes/AudioAttributes for example to USAGE_NOTIFICATION you should at least have a vibration that is enabled by default. The user can still turn off the notification vibrations in the settings though.

Why vibration doesn't work on Android P (API 28)?

3 Answers3